348 University of California Publications in Botany [Vol. 9 



Specimens examined. — Half-Moon Lake, Tahoe, 7,760 feet, Mc- 

 Gregor 53 ; Summit, Placer County, 7,000 feet. Heller 9846 ; head of 

 Fall Creek, Ormsby County, Nevada, Baker 1496 ; Highland Lake, 

 Alpine County, 8,500 feet, Abrams 4749 ; Summit Soda Springs, Dud- 

 ley, September, 1896; Ralston Peak, Tahoe, 8,300 feet. Smiley 415; 

 Mt. Tallac, talus slope on the east side, 9,000 feet. Smiley 246, 



la. Symphoricarpos rotundifolius var. acutus Frye and Rigg, 



Northwest FL, p. 366. 1912. 



S. mollis var. acutus Gray, Syn. Fl., vol. 1, pt. 2, p. 14. 1878. 



S. vaccinoides Eydb., Mem. N. Y. Bot. Gard, vol. 1, p. 371. 1900. 



S. acutus Howell, Fl. N.W. Am., vol. 1, p. 281. 1903. 



S. glaucus EastAv., Bull. Torr. Bot. Club, vol. 30, p. 497. 1903. 



S. parvifolius Eastw., I.e., 498. 



Type locality. — "Washington Terr, east of the Cascade Moun- 

 tains. ' ' 



Range. — Coincident with the species. 



Zone. — Canadian, rising into the Hudsonian. 



Specimetis examined. — Glen Alpine trail, Tahoe, Dudley, June 28, 

 1900; Angora Peak, Tahoe, 7,900 feet, Smiley 1; Bullion Flat, Mt. 

 Whitney trail, 8,700 feet, Dudley 2541 ; between Little Kern River 

 and Farewell Gap, Tulare County, 9,000-10,500 feet, Dudley 1096. 



The relationship of this perplexing form, whose inconstancy of 

 character is indicated by the above synon;yTny, has become clearer since 

 Dr. Gray first distinguished it as a variety of S. mollis Nutt. The 

 collections made in the period subsequent to the publication of the 

 variety in the Synoptical Flora indicate that its true relation is with 

 the long-flowered section of the genus. Certain other characters 

 (amount of the pubescence in the tube and the irregular leaf outline) 

 suggest that it may well be regarded as the form from which the two 

 localized and western species (Nos. 1-2) have diverged from the 

 widely-ranging and northern S. racemosus — 8. mollis group of species. 

 It is of interest to note that in this latter group of species definite 

 specific characters are difiicult to formulate, especially in material 

 from the Northwest ;^^^ see also the note under S. oreophilus. 



2. Symphoricarpos oreophilus Gray, Jour. Linn. Soc, vol. 14, p. 

 12. 1873. 



S. montanus Gray, in Emun. PI., Parry, Am. Jour. Sci. II, vol. 34, p. 249. 

 1862. 



Type locality. — "Hab. : Rocky Mountains, Colorado Territory and 

 New Mexico to the eastern side of the Sierra Nevada, California." 



